The poll showed a narrowing of Labour's lead over the Tories to 34% versus 32% - the smallest gap for almost two-and-a-half years in ComRes online research.

Ukip and the Liberal Democrats shed a point each to stand at 18% and 7%.

Religious freedom was named by only 12% of voters as one of the most important "British values" - after Mr Gove pledged they would be promoted in the classroom in the wake of the "Trojan Horse" controversy.